Sheet-metal-edging machine.



E. W. SALMON, In. SHEET METAL EDGING MACHINE. APPLICATION FILED SEPT. 30. m2. RENEWED ocr. 1|.1915.

Patented July '25, 1916.

s SHEETS-SHEET l E. W. SALMON, In.

SHEET METAL EDGING MACHINE.

APPLICATION FILED SEPT. 30, I912. RENEWED OCT. 11.1915.

1 ,1 92,797. Patented July 2-5, 1916.

Q b N n b 5 g m (1% x 34 33%; *1 C; v

fig @q N Q N sgsg f N K m x x I) $1 AMJ Q 11 31 7 avwewto'c @V/Qw/M E. W. SALMON, In. SHEET METAL EDGING MACHINE. APPLICATION FILED sumac, I9I2. RENEWED on. II. 1915.

1,1 92, 797. Patented July 25, 1916.

6 SHEETSSHEET 3.

wiwlmeooeo E. W. SALMON, JR. SHEET METAL EDGING MACHINE.

APPLICATION men sumac/1912. RENEWED ocr. n. 1915.

Patented July 25, 1916.

6 SHEETS-SHEET 4.

WITNESSES E. W. SALMON, la. y SHEET M'ETAL EDGING MACHINE.

APPLICATION FILED SEPT. 30, I9l2. RENEWED OCT. H. I915- 1,1 92,797.

1 Inni L1 N mm nmliflj I 1111mm llll run-gm) o I W/JYVESSES o r I.

Patented July 25, 1916.

6 SHEETS-SHEET 6.

EDWARD w. SALMON, an, or BAIJTIiiIoEE, MARYLAND, AssIeNoE or ONE-HALF TO CHRISTIAN H. NELSON, 0E BALTIMORE, MARYLAND sHEET-MEI'AL-EDGING MACHINE.

Specification of Letters Patent.

Application filed September 30,'1912, Seria11 Io. 723,255. B.enewed October 11, 1915. Serial No. 55,343.

To all whom it may concern I Be it known that I, EDWARD \V. SALMON, J r., a citizen of the United States, residing at Baltimore and State of Maryland, have invented certain new and useful Improvements in Sheet-Metal-Edging Machines, of which the following is a specification.

This invention relates to machines for edging sheet material. 7

One object is to provide a machine operable automatically upon'metallic or other sheet material for the purpose of edging the ends thereof.

Another object resides in the provision of a machine of the nature stated embodying among other-characteristics means operable automatically upon the sheet material to bend the same at its ends to provide hooks to facilitate the joining of one plate to another for roofing or other purposes.

A still further object is to provide a machine constructed to automatically act upon the ends of sheet material to shear and bend the same to provide the sheet material with a hook at each end.

A still further object resides in the provision of an automatically operating machine for bending the ends of sheet material to provide the latter with hooks and during the bending operation effect a shearing of the ends to square the same.

A still further object is to provide an automatically operating machine designed to support sheet material and bend the same at each end simultaneously to provide hooks at each end of the sheet material which are reversed with relation to each other.

A still further object resides in the provision of a machine capable of adjustment and operable automatically upon sheets of various lengths for the purpose of edging the same.

It is still further designed to provide an automatically operating nracihine -'-for operation upon sheet material. to provide the same with hooked ends with means operable to discharge a hooked sheet from the machine upon the introduction thereinto of another sheet.

With the above and other objects in View. the present invention consists in the combination and arrangement of parts hereinafter more fully described, illustrated in the accompanying drawings, and particularly pointed out in the appended claims, it beingunderstood that changes may be made 1I1'tl18 form, proportion, size and minordetails without departing from' the spirit or sacrificing any of the advantages of the invention.

, In the drawings: Figurel is a plan view of the invention. Fig. 2 is a side elevation. Fig. 3 is a longitudinal sectional view showing the parts in position ready to operate on the clamped material. Fig. 4; is a similar View illustrating the position of the parts after the sheet has been edged. Fig. 5 is a transverse sectional view. Fig. 6 is a transverse sectionalview. Fig. 7 is an edge view of a sheet formed by my machine.

In the use of the present invention, it will be understood at the outset that the machine is particularly adapted for the edging of sheet material with means arranged so that'each edged sheetmay be transported from the machine for storage, shipment, or for other purposes or be fed directly from the edging machine to a gage or other table for positioning of one of'these hooks with relation to a hook of another sheet on the gage or other table, whereby the hooked sheets thus coupledtogether may be fed through a machine provided with mechanism to permanently seam together the overlapping hooked ends, of sheets as has been fully illustrated, described and claimed in my co-pending application, filed July 3, 1912, Serial No. 7 07,544.

With the above understanding and referring now more particularly to the accompanying drawings the mechanism employed in the present instance for edging the sheet material is preferably mounted upon a base A includingside sills 20 connected by the end pieces 21 thereby "constituting a rectangular open base or. bed which is preferably supported by means of suitable legs 22. The side sills 20 on their inner sides adj a cent one end thereof are preferably provided with worm teeth forming racks 23 for a purpose presently explained,

The main drive shaft of the machine is indicated at 26. This shaft is preferably journaled in suitable bearings 24. and 25. The bearing 21 is preferably mounted on one end of the open frame A while the bearing 25 is'preferably mounted on the cross piece 27 rigidly connected to the supporting uprights 28 and 29. The supporting uprights 28 and 29 are designed for the support of 10 suitable sheet holding and cutting and bending mechanism and are adapted to coiiperate with another pair or set of supporting uprights 30 and 31 also designed for the support of sheet holding and cutting and bending mechanism. The supporting uprights 28 and 29 are fixedly secured to the base A while the supporting uprights 30 and 31 are preferably movable on the base A whereby provision is made for the adjustment of the sheet holding and cutting and bending mechanisms disposed between the respective supporting uprights to enable operation upon opposite ends of sheet material of various lengths. Each supporting upright has a horizontal slot at therein to permit the passage of sheet material "there through for a purpose presently explained.

The material holding and shearing and bending mechanisms between the respective supporting uprights are substantially the same. The only material difference between the mechanisms of opposite sets of supporting uprights resides in the fact that the parts of the mechanisms supported between one set of uprights are reversed with relation to the same parts supported between the other set of uprights. Taking up first a description of the mechanism supported be tween the uprights 30 and 31, the means for clamping the material B to permit of shearing and bending of one end of the material may consist of a clamping member 32 which preferably extends across the machine with its ends fixedly supported in the seats 33 on the inner sides of the uprights 30 and 31. This fixed clamping member serves as a support for one end of the sheet material B fed into the machine through the slots (4 of the uprights 28 and 30 and it is preferably pro vided with an inclined face 35 on its under side with its upper side provided with a recess to receive a steel plate 36 provided with. a beveled edge 37. Coiperating with this fixed clamping member 32 is a movable clamping member 38 provided with a recess on its under side for the reception of a steel plate 39 whose outer edge is beveled to correspond with the beveled or inclined face 40 of the movable clamping member 38. This movable clamping member 38 has studs 41 at its ends which preferably project through inclined slots 42 of the uprights 30 and 31 for connection with the curved arms 43 keyed to the rock shaft 44 journaled in the uprights 30 and 31. This movable clamping member 38 is provided also with arms 45 at its ends which carry studs 46 at their outer ends for projection through and operation in the inclined slots 47 in the uprights 30 and 31.

To operate the movable member 38 into and out of clamping coiiperation with the fixed clamping member 32 .1 provide suitable connections between it and the main drive pivoted at 54 to a curved link 55 rigidly cured to the aforesaid rock shaft intermediate the ends of the latter. Said rock shaft 44 is journaled in the uprights 30 and 31 so that upon rotation of the shaft 26, the

cam is caused to rotate, and in its rota tion, cause the roller 52 on the lever 53 to travel around in said cam groove 51 of the cam 48 and operate the lever 53 and correspondingly rock the rock shaft 44. Rocking of this shaft 44 causes such movement of the curved arms as to shift the movable clamping member 38 in'the aforesaid slots 42 and 4'? toward and away from the aforesaid fixed clamping member 32. The sleeve 49 is preferably feathered on the main drive shaft 26 through the instrumentality of a feathering key 50 which causes rotation of the sleeve 49 with the drive shaft 26 and yet permits of a sliding movement of the sleeve longitudinally of the drive shaft for a purpose presently explained.

When the clamping member 38 is in cooperative position with relation to the fixed clamping member 32 clamping the corresponding end of the sheet material, this particular end of the sheet material is operated upon to provide the same with an upwardly directed hook 5. To form the hook Z) T provide a blade holder 56 which extends preferably substantially throughout the width of the machine between the uprights 30 and 31 and has formed at its ends the arms 57 provided with journals 58 for engagement in the bearings 59 of the uprights 30 and 31 so as to provide for a swinging movement of the blade holder 56. Secured to the blade holder 56 is a blade 60 which is adapted to swing with the blade holder 56. To swing the blade holder 56 I provide the under side of the journals 58 with teeth 61 1* and at each side of the machine T provide a segmental member 62 with teeth 63 adapted to mesh with the teeth 61 of said journals 58. These segmental members 62 are rigidly secured to a rock shaft 64 journaled in the uprights 30 and 31. Intermediate the ends of this rock shaft 64 is rigidly connected a link 65 which has pivotal connection at 66 with a forked lever 67 whose fork embraces the shaft 26 and which carries a roller 68 adapted to operate in a groove 69 in a cam 70 keyed to the aforesaid sleeve 49. As the shaft 26 rotates the sleeve 49 and the cam 70 rotate. The roller 68 operating in the groove 69 of the cam causes such movement of the lever 67 as to rock the shaft 6 1. As the shaft 64: rocks it moves the segmental members 62 upwardly. This upward movement of the segmental members 62 causes rotation of the journals 58 because of the teeth 63 of the segmental members 62 being in mesh with the teeth 61 of the journals 58. The upward swinging movement of the segmental members 62 thus causes the blade holder 56 with its blade 60 to be swung upwardly with the arms 57 to which the blade holder 56 is secured. This upward movement of the blade holder 56 causes the edge 71 of the blade 60 to engage the end of the sheet material and bend the sheet material against the edge 72 of the plate 39 and against the inclined portion 4:0 of the clamping member 38. There is journaled in the arms 57 a shaft 73 to which a second blade holder 74: is rigidly secured. This second blade holder 7 4: carries a blade 75 provided with a shearing edge 76. Rigidly secured on the shaft 73 or to the ends of the blade holder 74, as may be preferred, are gear wheels 7 6 which are adapted to mesh with the gears 77 formed with or fixed to the inner. sides of the uprights 30 and 31. As the arms 57 swing upwardly the gears 76, being in mesh with the gears 77, cause a downward swinging movement of the blade holder 74-. When the shearing edges 71 and 76 of the blades 60 and 75 meet, at which time the sheet material has been bent slightly by the blade 60, the sheet material is sheared with the shearing edges 71 and 76 passing each other, the blade 75 continuing downwardly and finally going upward to the position indicated in Fig. at with the blade 60 continuing upwardly and forcing the bent and sheared edge of the sheet material against the flat face 40 of the movable clamping member 38 thereby completing the bending of the material at one end and thereby forming the upwardly directed hook 5.

Immediately upon the formation of the hook b in the manner just described the cams 48 and 70 operate the levers 53 and 67 to operate the rock shafts 4 1 and 64: and return said movable clamping member 38 and said blade holders 56 and 7a with their shearing blades to normal positions to repeat the operations.

lVhile one end of the sheet material is being provided with the upwardly directed hook Z) in the manner described the opposite end of the sheet is being provided with a downwardly directed hook c. To form this downwardly directed hook 0 the clamping, bending and shearing mechanisms between the uprights 28 and 29 are preferably the same as the similar mechanisms between the uprights 30 and 31. The only material difference between the mechanisms is that one is reversed with relation to the other. Some minor differences reside in the connections between the mechanisms and the drive shaft. For instance, between the uprights 28 and 29 the fixed clamping member 78 is disposed above rather than below the movable clamping member 79, being preferably fixed against the shoulders 80 on the inner sides of the uprights 28 and 29 with its blade 81 on its under side. The movable clamping member 79 has studs 82 in its ends which pass through inclined slots 83 in the uprights 28 and 29. Connected to these studs 82 on the outer sides of the uprights 28 and 29 are links 84: fixed at their lower ends to the rock shaft 85 to which latter is connected the lever 86 carrying a roller 87 for operation on the ratio cam 88 fixed on the aforesaid drive shaft 26. This movable clamping member 7 9, like the first-mentioned clamping member 38 has arms 89 provided with studs 90 arranged to slide in the inclined slots 91 of the uprights 28 and 29 so that upon operation of the roller 87 on the cam 88 the lever 86 and the links 84 will effect a movement of the movable clamping member 79 toward and away from the fixed clamping member 78. The movable clamping member 79 has a flat face 92 and a plate 93 for coiiperation with the plate 81 on the fixed clamping member 7 8.

The blade holders 9% and 95 are the same in formation as the blade holders 56 and 7%, respectively, each respectively carrying the same type of blades 96 and 97 as the blades carried by the aforesaid blade holders 56 and 7 4. As between the standards 30 and 31, the blade holder 94 is provided at its ends with arms 98 in which a shaft 99 is journaled and to which latter the blade holder 95 is secured. On the shaft 99 are gears 100 which mesh with gears 101 on the inner sides of the uprights 28 and 29 so that operation of the segmental. members 102 on the rock shaft 103 with their teeth in mesh with the teeth 10% of'the journals 105 of the arms 98 causes operation of the bending and shearing members in the same manner has been described. To operate these segmental members 102 the shaft 103 is rocked by virtue of a link connection 105 having loose connection 106 with a lever 107 pro vided with a roller 108 adapted to operate in the cam groove 109 in the cam 110 fixed on the drive shaft 26. Thus the operation of the mechanism between the uprights 28 and 29 is the same as the similar mechanism between the uprights 30 and 31 save that there are a few minor differences in the connections between the mechanisms and the main drive shaft and in the fact that the clamping, between the uprights 28 and 29 operate in reverse directions as compared with similar elements between the uprights 30 and 31.

The machine illustrated in the accompanyshearing and bending elements ing drawings is particularly adapted for operation upon sheets, say for instance, twenty inches in length. To operate upon sheets of greater length I provide for an adjustment of the machine according to the varying lengths of material to be operated upon. I therefore journal through the up rights 30 and 31 a shaft 111 providing the same with worms 112 and 113 adapted to mesh with worm gears 114C and 115, respectively, secured on stub shafts 116 and 117 respectively, which are journaled in suitable bearings 118 on the aforesaid cross piece 3% between the uprights 30 and 31. On each of the stub shafts 116 and 117 is a worm gear 119 which is adapted to mesh with the aforesaid worm teeth 23 on the side sills 20 of the base or frame A. The worm shaft 111 is provided with a crank handle 120 and on rotation of the worm shaft 111 by the crank handle 120 the gears 11% and 115 are set in motion and cause rotation of the shafts 116 and 117 and consequent rotation of the worm gears 119. The gears 119 being in mesh with the racks 23 the up rights 30 and 31 with the mechanism be tween them are adapted to slide along the frame A on the guides 121 and when the uprights 30 and 31 have been moved the desired or required distance, they may be clamped on the base and held in adjusted positions by means of suitable fastening means 122. The sleeve 1-9 being feathered on the shaft 26 and carrying the cams 4-8 and 70 permits them to move longitudinally of the shaft 26 when the uprights 30 and 31 are adjusted in the manner just described.

The material to be edged may be fed in between the uprights 28 and 29, and 30 and 31 through the slots at of the uprights 28 and 30 in any suitable manner. One manner of feeding the material in between the uprights is to provide chains 124 and 125 adapted to operate over sprockets 126, 127 and 128. The chain 121- carries projections 129 and 130 as does also the chain 125, the projections 129 and 130 of one chain being disposed opposite the projections 129 and 130 of the other chain. Assuming that there is a sheet of material between the projections 129 (see Fig. 5) and that the same has been edged and it is ready to be shifted through the slots (4 of the uprights 29 and 31 on the table 131 (see F 1), the operator engages one edge of the sheet material with the oppositely disposed projections 130 of the chains 12 1 and 125 and moves the chains with the result that the edged sheet between the projections 129 is passed through the slots a in the uprights 29 and 31 while the sheet material engaging the projections 130 is fed into the machine for edging or for edging and shearing purposes. This is but one method of feeding the material into the machine and it may be understood that when the material has been edged and carriedout of the machine by the chains 124: and 125 to the table 131 the sheets may be removed from the table by hand or otherwise and stored Or shipped. in one use of the invention, however, it may be employed in lieu of the bending and shearing mechanism illustrated, described and claimed in my copending application, filed July 3, 1912, [861131 No. 707,544, in which event the table away from the uprights 28 and 29, an adjustment of these elements may be made for the purpose of using but one set of clamps to hold the material so that, if desired, one

end only of the sheet material may be bent or bent and sheared as may be desired.

lVhat is claimed is:

1. A machine of the character described including in combination, a frame, means supported on the frame to hold the sheet material, means for bending the sheet material across one end thereof to form a hook, and means for cutting the material entirely across the bent end in gaged relation to the bend of the hook and during the bending operation.

2. A machine of the character described, '7

including in combination, a frame, means supported on the frame to hold the sheet material, means for bending the sheet material across one end thereof to form a hook, I

and means for cutting the material entirely across the bent end in gaged relation to the bend of the hook and prior to the complete formation of the hook.

3. A machine of the character described,

including in combination, a frame, means supported on the frame to hold the sheet material, means for bending the sheet material across each end thereof to form a hook at each end of the material, and means for cutting the material entirely across its ends in gaged relation to the bends of the hooks and during the bending operation.

4:. A machine of the character described comprising means for clamping sheet material to hold the same firmly, and means for bending the sheet material across one end thereof and simultaneously cutting the material entirely across the bent end in gaged relation to the bend of the hook.

5. A machine of the character described including in combination a frame, pairs of uprights mounted on the frame, a drive shaft ournaled on the frame, a fixed clamping member mounted in each pair of up CIR rights, a movable clamping member mounted in each pair of uprights for operation with the fixed clamping members, each movable clamping member having an inclined face, means operable between each pair of uprights to bend the sheet material against the inclined faces of the movable clamping members, and means operable under the influence of the aforesaid bending means and adapted to cooperate with the latter to shear the ends of the sheet during the bending of the ends of the sheet into engagement with the flat faces of the movable clamping members.

6. A machine of the character described including in combination a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, a clamping mechanism mounted between each pair of uprights, connections between the clamping mechanisms and the drive shaft to operate the clamping mechanisms, a combined bending and shearing element swingingly mounted in each pair of uprights to bend the ends of the sheet material to form a hook at each end of the sheet and a shearing element swingin'gly mounted in each pair of uprights for cooperation with the corresponding combined bending and shearing element to shear the material prior to the complete formation of the hooks.

7. A machine of the character described including in combination, a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, a fixed and a movable clamping member mounted in each pair of uprights, means between the movable clamping member and a drive shaft to operate the movable clamping member, said clamping members being adapted to clamp the sheet material between them, means for simultaneously bending and shearing the ends of the sheets, and connections between the bending means and the shearing means "and the drive shaft to operate the bending and shearing means.

8. A machine of the character described including In combination, a. frame, pairs of uprights mounted on the frame, a clamping means arranged between each pair of uprights, each clamping means including a fixed and a movable clamping member, each of the latter having a fiat face, means arranged between each pair of uprights to bend the ends of the sheet against the flat faces of the movable clamping members to provide the sheet with a hook at each end and means for operating said bending means, and means cooperating with the bending means to shear the ends of the material prior to the complete formation of said hooks.

9. A machine of the character described including in combination, a frame, pairs of uprights mounted on the frame, a clamping means arranged between each pair of uprights, each clamping means including a fixed and a movable clamping member, each of the latter having a flat face, means arranged between each pair of uprights to bend the ends of the sheet against the flat faces of the movable clamping members to provide the sheet with a hook at each end, means for operating said bending means, means cooperating with the bending means to shear the ends of the material prior to the complete form tion of said hooks, and means for adjusting one pair of uprights toward and away from the other pair of uprights.

10. A. machine of the character described including in combination a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, a fixed clamping member mounted in each pair of uprights, a movable clamping member mounted in each pair of uprights for cooperation with the fixed clamping members, connections between the movable clamping members and the shaft to operate the movable clamping members, a blade holder journaled in each pair of uprights and carrying a shearing blade which is adapted to cooperate with the corresponding movable clamping member to provide hooks at the ends of the sheet material, a second blade holder mounted in each pair of uprights and carrying a shearing blade, connections between the first-named blade holders and the drive shaft to operate the first-named blade holders, and connections between the blade holders of each pair of uprights to effect operation of the second mentioned blade holders upon operation of the first-named blade holders to shear the ends of the sheet material.

11. A machine of the character described including in combination, a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, a fixed clamping member mounted in each pair of uprights, a movable clamping member mounted in each pair of uprights for cooperation with the fixed clamping members, connections between the movable clamping members and said shaft to effect movement of the movable clamping members into and out of operation with the fixed clamping members, means constructed and arranged to cooperate with the movable clamping members to provide hooks at the end of the sheet material, means arranged to shear the material prior to the complete formation of said hooks, connections between the bending means and the shearing means, and connections tween the bending means and the shaft to effect operation of the bending and shearing means.

12. A machine of the character described including in combination a frame, pairs of uprights mounted on the frame, a drive shaft journaled in the frame, a clamping mechanism arranged between each pair of uprights to hold the sheets in fixed position with the end of the sheet projecting beyond said clamping means, means for engaging the projecting ends of the sheets to bend the same and form hooks at the ends thereof,

connections between the drive shaft and the bending means to operate the latter, and means for shearing the edges of the projecting ends of the sheets simultaneously with the formation of said hooks.

13. A machine of the character described including in combination a frame, pairs of uprights mounted on the frame, a drive shaft journaled in the frame, a clamping mecha nism arranged between each pair of uprights to hold the sheets in fixed position with the ends of the sheet projecting beyond said clamping means, means for engaging the projecting ends of the sheets to bend the same and form hooks at the ends thereof, connections between the drive shaft and the bending means to operate the latter, and means operatively connected to the bending means to shear the edges of the projecting ends of the sheets prior to the complete formation of said hooks.

14. A machine of the character described, including in combination, a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, clamping mechanism arranged between each pair of uprights, means between each clamping mechanism and the drive shaft to automatically operate the clamping mechanisms, a combined bending and shearing mechanism arranged between each pair of uprights, and means between the bending and shearing mechanisms and the drive shaft to automatically operate the bending and shearing mechanisms simultaneously.

15. A machine of the character described including in combination, a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, clamping mechanism arranged between each pair of uprights, means between each clamping mechanism and the drive shaft to automatically operate the clamping mechanism, a combined bending and shearing mechanism ar ranged between each pair of uprights, and means between the bending and shearing mechanism and the drive shaft to automatically operate the shearing and bending mechanisms simultaneously, the clamping mechanisms cooperating with the shearing and bending mechanisms to provide a hook at each end of the material.

16. A machine of the character described including in combination, means for clamping opposite ends of sheet material with the ends of the material projecting beyond the clamping means, means engageable with the projecting ends of the material to force the projecting ends into engagement with the clamping means to provide the material with a hook at each end thereof, means for operating the bending means, and means operatively connected with the bending means to shear the edges of the projecting ends of the material simultaneously with the formation of said hooks.

17. A machine of the character described including in combination, means for clamping opposite ends of sheet material with the ends of the material projecting beyond the clamping means, means engageable with the projecting ends of the material to force the projecting ends into engagement with the clamping means to provide the material with a hook at each end thereof, means for operating the bending means, and means operatively connected with the bending means to shear the edges of the projecting ends of the material prior to the complete formation of the hooks.

18. A machine of the character described including in. combination, a frame, means for clamping the sheet material adjacent its ends to hold the same firmly with the sheet material projecting at its ends beyond the clamping means, means engageable with one of the projecting ends of the material to bend the same upwardly to provide a hook at one end of the material, means engageable with the opposite projecting end of the material to bend the same downwardly and provide a hook at the opposite end of the material, means for operating each of said bending means, and means operatively connected to each bending means for co operation therewith to shear the edges of the projecting ends of the sheet material simultaneously with the formation of said hooks.

19. A. machine of the character desc ibed including in combination, a frame, means for clamping the sheet material adj a cent its ends to hold the same firmly with the sheet material projecting at its ends beyond the clamping means, means engageable with one of the projecting ends of the material to bend the same upwardly to provide a hook at one end of the material, means engageable with the opposite projecting end of the material to bend the same downwardly and provide a hook at the opposite end of the material, means for operating each of said bending means, and means operatively connected with each bending means for cooperation therewith to shear the edges of the projecting ends of the sheet material prior to the complete formation of said hooks.

20. A machine of the character described including in combination, a frame, means for clamping the sheet material adjacent its ends to hold the same firmly with the sheet material projecting at its ends beyond the clamping means, means engageable with one of the projecting ends of the material to bend the same upwardly to provide a hook at one end of the material, means engageable with the opposite projecting end of the material to bend the same downwardly and provide a hook at the opposite end of the material, means for operating each of said bending means, means operatively connected to each bending means for cooperation therewith to shear the edges of the project ing ends of the sheet material simultaneously with the formation of said hooks, means for effecting a discharge of the edged sheet from the machine upon the insertion of a sheet to be edged, and means whereby one clamping means may be adjusted toward and away from the other clamping means to edge sheets of various lengths.

21. A machine of the character described, including in combination, a frame, two sets of edging elements for bending the sheet material across its ends to form hooks, and means cooperating with said edging elements to cut the material entirely across the bent ends in gaged relation to the bend of the hooks and during the bending operation.

22. A machine of the character described including in combination, a frame, pairs-of uprights mounted on the frame, a drive shaft journaled on the frame, a fixed clamping member mounted in each pair of uprights, a movable clamping member mounted in each pair of uprights for cooperation with the fixed clamping members, connections between the movable clamping members and the shaft to operate the movable clamping members, a swinging bending member journaled in each pair of uprights, connections between the shaft and each bending member to operate the latter to bend the ends of the sheet material to provide the same with a hook at each end, and means operatively connected to the swinging bending member for cooperation with the latter to shear the edges of thesheet material simultaneously with the formation of said hooks.

23. A machine of the character described including in combination, a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, a fixed clamping member mounted in each pair of up rights, a movable clamping member mounted in each pair of uprights for cooperation with the fixed clamping members, connections between the movable clamping members and the shaft to operate the movable clamping members, a swinging bending member journaled in each pair of uprights, connections between the shaft and each bending member to operate the latter to bend the ends of the sheet material to provide the same with a hook at each end, and

means operatively connected to each bending member for cooperation therewith to shear the edges of the sheet material prior to the complete formation of said hooks.

24. A machine of the character described including in combination, a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, a clamping mechanism mounted in each pair of uprights to engage the material and hold the same with the ends of the material projecting from the clamping mechanisms, a swinging bending member arranged between each pair of uprights and provided with arms journaled in the uprights, each bending member being engageable with a projecting end of the material to bend the same, the journals of the arms of each bending member having teeth, a rock shaft journaled in each pair of uprights, segments connected with each rock shaft and engaging the teeth of the journals of the arms of the corresponding bending members, cam mechanisms connected to said drive shaft and operatively connected to said rock shafts to rock the latter and thereby operate said segmental members to swing said bending members and bend the ends of the material to provide the same with a hook at each end.

25. A machine of the character described including in combination, a frame, pairs of uprights mounted on the frame, a drive shaft journaled on the frame, a clamping mechanism mounted in each pair of uprights to engage the material and hold the same with the ends of the material projecting from the clamping mechanisms, a swinging bending member arranged between each pair of uprights and provided with arms journaled in the uprights, each bending member being engageable with a projecting end of the material to bend the same, the journals of the arms of each bending member having teeth, a rock shaft journaled in each pair of uprights, segments connected with each rock shaft and engaging the teeth of the journals of the arms of the corresponding bending members, cam mechanisms connected to said drive shaft and operatively connected to said rock shafts to rock the latter and thereby operate said segmental members to swing said bending members and bend the ends of the material to provide the same with a hook at each end, each upright having a gear thereon a shaft connecting the arms of each bending member, a shearing blade fixedly secured on each of the last-mentioned shafts, a gear on each of said last-mentioned shafts in mesh with the gear on each of said uprights whereby upon swinging movement of the bending members, said shearing blades are operated to cooperate with the bending members and effect a shearing of the edges of the projecting ends of the material simultaneously with the formation of said hooks.

26. A machine of the character described including in combination a frame, means mounted in the frame to clamp sheet material to hold the same firmly, means for feeding the sheet material to said clamping means, means for bending the ends of the sheet material to form a hook entirely across each end of the material, and means for shearing the material entirely across its ends simultaneously with the formation of said hooks.

27. A machine of the character described including in combination, a frame, pairs of uprights mounted on the frame, a drive shaft journaled in the frame, a clamping mechanism arranged between each pair of uprights to hold the sheet material in fixed position with the ends of the sheet material projecting beyond said clamping mechanisms, means for shearing the edges of the projecting ends of the material, means for bending the projecting portions of the sheet material to provide the latter with a hook at each end, connections between the bending and shearing mechanisms, connections between the bending and shearing mechanisms and the drive shaft, and means whereby one pair of uprights may be adjusted with relation to the other.

28. A machine of the character described including in combination a frame, spaced clamping mechanisms arranged on the frame and arranged to hold the sheet material in fixed position with the ends of the sheet ma terial projecting beyond the clamping mechanisms, means for bending the project ing ends of the sheet material to bend the same to form a hook at each end of the material, and means for shearing the edges of the projecting portions of the material prior to the complete formation of the hook.

29. A machine of the character described including in combination a frame, means mounted on the frame to clamp sheet material and hold the latter in fixed position, means engageable with an end of the sheet material to bend the same to provide a hook at the end of the same, and means cooperating with the bending means to shear the end of the material at which the hook is formed simultaneously with the formation of the hook.

30. A machine of the character described including in combination a frame, means mounted on the frame to clamp sheet material and hold the latter in fixed position, means engageable with an end of the sheet material to bend the same to provide a hook at the end of the same, means cooperating with the bending means to shear the end of the material at which the hook is formed simultaneously with the formation of the hook.

31. A machine of the character described including in combination, fixed clamping members mounted on the frame, movable clamping members mounted on the frame for cooperation with the fixed clamping members, means for operating the movable clamping members, said clamping members being adapted to hold sheet material in fixed position, swinging bending members journaled on the frame and engageable with the ends of the sheet material to provide the same with a hook at each end, said bending members swinging in opposite directions with relation to each other, means for operating said swinging bending members, shearing blades mounted for swinging movement on the frame for cooperation with the bending members to shear the ends of the sheet material, the shearing blades being adapted to swing in opposite directions to each other,

nd operative connections between one shearing blade and the corresponding bending member for operation thereby.

In testimony whereof I atliX my signature in presence of two witnesses.

ED'WARD W. SALMON, J R.

Witnesses D. LIST WARNER, Geo. W. TnoMPsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

